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CARGO_HOME can't be mounted read-only when building with --frozen #3256

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brson opened this issue Nov 6, 2016 · 0 comments · Fixed by #3259
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CARGO_HOME can't be mounted read-only when building with --frozen #3256

brson opened this issue Nov 6, 2016 · 0 comments · Fixed by #3259

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@brson
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brson commented Nov 6, 2016

I have done cargo fetch and cargo generate-lockfile. Now i'm trying to run cargo build in a container, where CARGO_HOME is mounted read-only, assuming nothing in there needs to be touched. I get this error though:

101 ec2-user@ip-10-254-206-7:~/dev/cargobomb$ docker run -it -v `pwd`/dockertest:/test -v `pwd`/work/cargo-home:/cargo-home:ro -v `pwd`/work/rustup-home:/rustup-home:ro -v `pwd`/work/target-dirs/default:/target cargobomb cargo build --verbose
error: unable to get packages from source

Caused by:
  failed to open: /cargo-home/registry/cache/github.com-1ecc6299db9ec823/fake-simd-0.1.0.crate

Caused by:
  Read-only file system (os error 30)
alexcrichton added a commit to alexcrichton/cargo that referenced this issue Nov 6, 2016
@alexcrichton
Open crate files readonly first
27e439c 
This allows Cargo to work with read-only `CARGO_HOME` directories where the
cache was prepared ahead of time.

Closes rust-lang#3256
@alexcrichton alexcrichton mentioned this issue Nov 6, 2016
Merged
bors added a commit that referenced this issue Nov 8, 2016
@bors
Auto merge of #3259 - alexcrichton:more-ro, r=brson
0c155a4 
Open crate files readonly first

This allows Cargo to work with read-only `CARGO_HOME` directories where the
cache was prepared ahead of time.

Closes #3256
@bors bors closed this as completed in #3259 Nov 8, 2016
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Open crate files readonly first alexcrichton/cargo
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@brson